EP0368023B1 - Werkzeugsystem - Google Patents

Werkzeugsystem Download PDF

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Publication number
EP0368023B1
EP0368023B1 EP89118954A EP89118954A EP0368023B1 EP 0368023 B1 EP0368023 B1 EP 0368023B1 EP 89118954 A EP89118954 A EP 89118954A EP 89118954 A EP89118954 A EP 89118954A EP 0368023 B1 EP0368023 B1 EP 0368023B1
Authority
EP
European Patent Office
Prior art keywords
tool
compressed air
tooling system
tool holder
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89118954A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0368023A2 (de
EP0368023A3 (de
Inventor
Rainer Dipl.-Ing. Von Haas
Günter Ruther
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Widia GmbH
Original Assignee
Krupp Widia GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krupp Widia GmbH filed Critical Krupp Widia GmbH
Publication of EP0368023A2 publication Critical patent/EP0368023A2/de
Publication of EP0368023A3 publication Critical patent/EP0368023A3/de
Application granted granted Critical
Publication of EP0368023B1 publication Critical patent/EP0368023B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1015—Arrangements for cooling or lubricating tools or work by supplying a cutting liquid through the spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/005—Devices for removing chips by blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/002—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders
    • B23Q17/003—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders by measuring a position
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/44—Cutting by use of rotating axially moving tool with means to apply transient, fluent medium to work or product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303976—Milling with means to control temperature or lubricate
    • Y10T409/304032—Cutter or work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/304088—Milling with means to remove chip
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/309352—Cutter spindle or spindle support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/309352—Cutter spindle or spindle support
    • Y10T409/309408—Cutter spindle or spindle support with cutter holder

Definitions

  • the invention relates to a tool system in which a tool head is interchangeably arranged on a tool holder by means of an integrated clamping device and which has an integrated coolant supply.
  • a modular tool system of this type is known from DE-U-84 37 207.
  • the tool changing device for example intended for a numerically controlled machine tool, basically consists of a tool holder on which an integrated clamping device can be used to interchangeably arrange a tool head that is currently required for the respective application.
  • the tool system also has an integrated coolant supply, by means of which coolant can be supplied to the tool head for machining.
  • the tool head can also be changed with the known tool system from DE-U-84 37 207 with the aid of an automatic tool changing device.
  • the tool head is replaced, for example, by a swivel arm that operates independently of the machine tool.
  • the coupling or clamping surfaces between the tool holder and the tool head are often contaminated by falling chips or other dirt.
  • the new tool head can then not be installed at all in the dirty tool holder or can only be installed incorrectly. The safe and trouble-free operation of the machine tool is no longer guaranteed, the automatic one Manufacturing is interrupted.
  • a tool system designed in this way has the advantage of an integrated cleaning device, by means of which the coupling point between the tool head and the tool holder can be cleaned in a technically simple manner, so that no contaminants can settle there, which could prevent the installation of a new tool head in the prescribed manner .
  • the compressed air can blow out chips or other dirt that falls in when changing tools and contaminate the coupling surfaces.
  • the loss of coolant that occurs when changing the tool can also be eliminated.
  • the integrated cleaning device thus ensures safe and trouble-free operation of the machine tool without the risk of an interruption in the automatic production.
  • the cleaning device can be used both for tool systems with a stationary tool and for tool systems with a rotating tool. To the compressed air supply, only the requirement is met make sure that it reaches all coupling or clamping surfaces with the compressed air and thus blows away disturbing dirt.
  • coolant can penetrate the compressed air supply and cause corrosion damage there, in particular at high coolant pressures of up to 160 bar which are quite common today.
  • a check valve is arranged in the compressed air supply.
  • the check valve prevents up to 160 bar of coolant from entering the compressed air supply, particularly in view of the high coolant pressure, and possibly leading to corrosion damage there.
  • the check valve prevents coolant from penetrating directly into the machine tool, which could lead to very great damage.
  • the check valve preferably consists of a ball or the like which is spring-loaded against a valve seat.
  • a check valve of this type has proven itself in technology and is characterized by its reliability. Instead, however, other check valves are also conceivable that serve the same purpose.
  • the check valve In a further development of the check valve, it is designed and arranged in the compressed air supply in such a way that its closing force increases in the case of a rotating tool system with increasing speed, that is, if the tool system has, for example, a rotating spindle. This ensures that the sealing effect increases steadily with increasing speed and thus the functional reliability of the check valve is guaranteed in every operating state.
  • the compressed air supply In a further development of the compressed air supply this has a radial component in the area of the coupling point mouth. In the case of a rotating tool system, this leads to the fact that the centrifugal force transports coolant possibly penetrating into the compressed air supply and thus protects the compressed air supply from corrosion damage.
  • the compressed air supply if a check valve is arranged in it, has a radial component behind it, so that the entire compressed air supply is protected against the ingress of coolant. This also relieves the check valve.
  • the compressed air supply has a sensor device for the dynamic pressure which arises when the tool head is clamped in the desired position.
  • a function check is carried out as to whether the tool head has assumed its prescribed position after the clamping process, that is, if the tool head closes the outlets of the compressed air supply in the tool holder, so that a dynamic pressure arises in the compressed air supply.
  • the function check is possible both with an automatic tool change and with a change carried out by hand.
  • the tool system shown in FIG. 1 has a tool holder 1, on the front end of which a tool holder head 2 is screwed.
  • the tool holder 1 or the tool holder head 2 has a central receiving bore 3, in which a clamping bolt 4 is arranged to be longitudinally displaceable.
  • the clamping bolt 4 has an integrally formed washer 6, between which and the rear end of the tool holder head 2 a plate spring assembly 7 is supported. This presses the clamping bolt 4 into its rear working position.
  • the clamping bolt 4 is composed of two parts and, in particular, has a coaxial coolant supply 8, which opens into a frustoconical clamping bolt head 9 at the front end of the clamping bolt 4.
  • a tool head 11 shown in dash-dotted lines can be locked on the tool holder 1 and in particular on the tool holder head 2.
  • the clamping bolt 4 is moved forward in the direction of the arrow P, so that the spring pins 10 move them inwards so that the clamping pins 10 are arranged completely within the tool holder head 2.
  • the tool head 11 can then be attached to the tool holder head 2 either by hand or by means of an automatic tool changing device.
  • the clamping bolt 4 is moved back into its rear locking position due to the plate spring assembly 7, so that the dowel pins 10 are displaced outwards in such a way that they engage in corresponding recesses in the tool head 11, so that the latter is fixed on the tool holder head 2 and is in the final working position.
  • the tool head 11 is exchanged for another in the corresponding manner.
  • the tool holder 1 or the tool holder head 2 has a compressed air supply 12 parallel to the coolant supply 8, which opens into an annular channel 13 formed in the tool holder head 2, which is sealed on both sides for this purpose by means of O-rings.
  • a compressed air supply 12 parallel to the coolant supply 8
  • the coolant supply 8 opens into an annular channel 13 formed in the tool holder head 2, which is sealed on both sides for this purpose by means of O-rings.
  • This ring channel 13 to the end face of the tool holder head 2 are uniformly distributed compressed air supply lines 12, namely in the area where the tool head 11 abuts the tool holder head 2.
  • this section of the compressed air supply 12 runs parallel to the central axis of the tool system.
  • a check valve 15 is arranged in the compressed air supply 12. This consists of a ball 16 which is pressed against a valve seat 18 by means of a spring 17. When pressure is applied to the compressed air supply 12 by means of compressed air, the ball 16 is lifted against the force of the spring 17 from the valve seat 18 so that the compressed air can pass through the check valve 15 and exits at the front end of the tool holder head 2.
  • This check valve 15 prevents, for example by means of a pressure of 160 bar, coolant emerging from the coolant supply 8 from entering the compressed air supply 12 and causing corrosion damage there, for example if the coolant penetrates directly into the machine tool.
  • the compressed air supply 12 serves as a cleaning system by means of which the coupling and clamping surfaces between the tool head 11 and the tool holder 1 or the tool holder head 2 can be cleaned during a tool change, by cleaning the coupling and clamping surfaces before the installation of a new tool head 11 by escaping compressed air and thus escaping coolant or Chips falling into the tool change are blown away. In this way it is ensured that after a new tool head 11 has been placed on it, it is clamped in its prescribed position and thus a safe and trouble-free operation of the machine tool is ensured.
  • the embodiment according to FIG. 2 differs from the embodiment shown in FIG. 1 only by guiding the section of the compressed air supply 12 between the check valve 15 and the front end face of the tool holder head 2. While in the embodiment according to FIG. 1 this section is parallel to the central axis of the tool system, in the embodiment according to FIG. 2 this section runs obliquely outwards. This has the advantage that, due to a radial component of the centrifugal force, any coolant that penetrates is removed to the outside and cannot be deposited in this section of the compressed air supply 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
EP89118954A 1988-11-11 1989-10-12 Werkzeugsystem Expired - Lifetime EP0368023B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3838318A DE3838318A1 (de) 1988-11-11 1988-11-11 Werkzeugsystem
DE3838318 1988-11-11

Publications (3)

Publication Number Publication Date
EP0368023A2 EP0368023A2 (de) 1990-05-16
EP0368023A3 EP0368023A3 (de) 1991-08-07
EP0368023B1 true EP0368023B1 (de) 1994-08-24

Family

ID=6367002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89118954A Expired - Lifetime EP0368023B1 (de) 1988-11-11 1989-10-12 Werkzeugsystem

Country Status (5)

Country Link
US (1) US4951578A (ja)
EP (1) EP0368023B1 (ja)
JP (1) JP3004292B2 (ja)
AT (1) ATE110314T1 (ja)
DE (2) DE3838318A1 (ja)

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DE4224296A1 (de) * 1991-08-21 1994-01-27 Sandvik Gmbh Mechanische Spannvorrichtung mit Adapterteil
US5193954A (en) * 1991-10-30 1993-03-16 Gte Valenite Corporation Universal tool connection
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US5947661A (en) * 1994-01-19 1999-09-07 Horkos Corp. Cutting chip air-stream removing device for a mechanical tool
JP3027505B2 (ja) * 1994-04-20 2000-04-04 キタムラ機械株式会社 主軸装置
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JP3035195B2 (ja) * 1995-08-11 2000-04-17 キタムラ機械株式会社 主軸装置
DE29520427U1 (de) * 1995-12-22 1996-02-08 Deckel Maho Gmbh Spindeleinheit für Werkzeugmaschinen
JPH09262710A (ja) * 1996-03-28 1997-10-07 Nippon Mektron Ltd ドリルシャンクへの切粉付着防止装置
US5775853A (en) * 1996-09-03 1998-07-07 Makino Inc. Machining method and multi-function tool
EP0827797B1 (de) * 1996-09-05 2002-01-02 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG Werkzeug zur spanabtragenden Bearbeitung von Bohrungsoberflächen
SE511565C2 (sv) * 1997-04-28 1999-10-18 Sandvik Ab Verktyg för skärande bearbetning
JPH1190762A (ja) * 1997-05-27 1999-04-06 Chiron Werke Gmbh & Co Kg 工作機械
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JP2000052185A (ja) * 1998-08-10 2000-02-22 Brother Ind Ltd 工作機械用洗浄装置
DE19901372B4 (de) * 1999-01-15 2007-09-13 Franz Kessler Kg Spannkopf, insbesondere zur Werkzeughalterung
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DE10205234C1 (de) * 2002-02-08 2003-07-24 Wto Werkzeug Einrichtungen Gmb Werkzeugkopf zur Halterung eines Werkzeugs bei einer Werkzugmaschine
US7144207B2 (en) * 2003-07-29 2006-12-05 The Boeing Company Fluid chuck device and method
TW200618979A (en) * 2004-12-03 2006-06-16 Kou Sheng Feng Entpr Co Ltd Machine tool having inbuilt water supplier
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DE102013201328B4 (de) * 2013-01-28 2015-06-11 Deckel Maho Pfronten Gmbh Bearbeitungseinheit für eine programmgesteuerte Werkzeugmaschine
CN107953283A (zh) * 2017-12-01 2018-04-24 柳州市钜嘉机械有限公司 一种汽车检具用的夹紧机构

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Also Published As

Publication number Publication date
EP0368023A2 (de) 1990-05-16
DE58908232D1 (de) 1994-09-29
DE3838318A1 (de) 1990-05-17
ATE110314T1 (de) 1994-09-15
JPH02243239A (ja) 1990-09-27
US4951578A (en) 1990-08-28
JP3004292B2 (ja) 2000-01-31
EP0368023A3 (de) 1991-08-07

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